The max columns on an excel 2007 sheet are 16k. The max rows are 1M.
In excel 2003 the max columns are 256 and max rows of 64k.
As long as you want it to be. This is the same as asking how long is a word document. Ask again using words that make it clear what you want to know.
how to create a excel sheet
Pfa the excel sheet
Add a sheet
They are the same thing, excel is Microsoft's spreadsheet programme.
Calculating DSCR in Excel sheet
Select the sheet.
A spread sheet
17,179,869,184 cells in one excel
Even if the cells inside the worksheet are empty, that is information for Excel to know and require space on your hard drive/ flash memory etc.
I believe chart sheet.
Cell protection only kicks in when you protect the entire sheet. So for the cell to be protected, then the sheet has to be protected.
You can click and drag a sheet tab to change its position.